Turning the ignition stands for the first spark of a new start, the moment a plan comes to life. A car that will not start is read as hesitation or a project waiting for the right energy.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.